A100 + Mamiya 300mm
![Image](https://lh4.ggpht.com/alfake74/SL79YJ_h5XI/AAAAAAAAAqc/G2uxH3e4Mt4/s400/PELEGRINA-2008-001_web.jpg)
Your images shows very even coverage, no visible CA, but a slight softness. I'd say they were acceptable, probably better in terms of a consistent corner to corner image than the Tamron, but definitely softer than the 70-300mm SSM. The SSM lens is sharper than the 100-300mm APO D, and here is an Alpha 100 sample from that lens at 300mm and f7.1 - it was clipped from an overall view to show the effects of shooting in summer, with heat haze disrupting the detail of the shot. But you can see the level of detail the A100 is capable of, and the lens, from the fine lines, brickwork and other shapes in this clip:alfake wrote:David and Javelin, thanks for the comments. I would also like to know whether I am losing too much by using the Mamiya 300mm or not. (I have no other 300mm. Would either the Tamron 70-300mm or the Sony 70-300mm G be significantly better at 300mm f11?)
Pelegrina lies about 130 km to the north-east of Madrid (and 7 km away from Sigüenza, where I live). I don’t know whether its castle is considered a landmark or not (probably not), but I am sure it’s not exceptional. This is the old Castilla. Medieval castles (‘castillos’) are here a very common view. Most of them lie in ruins. (The castle of Pelegrina was set on fire by the retreating Napoleonic troops, and never reconstructed. The picture above partially hides the state of ruin. It shows a relatively unfamiliar view of the castle, simply because you’ll have to walk twenty minutes from the nearest road to find this point of view.)David Kilpatrick wrote:where is Pelegrina's Castle? It looks like an exceptional landmark.
The Mirex Tilt-Shift adapter is very well made (and priced accordingly). It has brought back to life my Mamiya 645 lenses (I have six), which were collecting dust since my film days came to an end (three years ago). And as a bonus it has added movements to all of them! (I must now admit I had nearly forgotten the pleasure of using those heavy, slow, full-metal manual focus lenses…)Dr. Harout wrote:Very beautiful and the adapter interested me.
If all those models were to use the same lens for a sharpness test, and the lens had sharp detail resolution just in excess of the A100 sensor, but not quite up to the others, then I would expect the A100 to show sharper images at 100% than the others as a simple consequence of lens resolution and sensors. Have I got that right?David Kilpatrick wrote: Actually, this reminds me again that the Alpha 100 is sharper than any of the later models - 700, 200, 300, 350 none have exactly the same fine detail recording ability at 100%, though the 700 and 350 both capture more detail in the end by having larger file size.
David
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